Under extreme pressure conditions, fluorosilicone oil exhibits its unique performance advantages. The following is a detailed analysis of the performance of fluorosilicone oil under extreme pressure conditions:

1. Oil resistance and solvent resistance
Fluorosilicone oil introduces trifluoropropyl groups on silicon atoms, which makes it have excellent oil resistance and solvent resistance in addition to the basic properties of methyl silicone oil. Under extreme pressure conditions, this performance is particularly prominent, allowing fluorosilicone oil to be widely used as a lubricant, defoamer, surface treatment agent, release agent and additive in many fields.

2. Chemical stability
Fluorosilicone oil molecules contain C-F bonds, C-Si bonds and Si-O-Si bonds, but do not contain Si-F bonds, and the fluorinated carbon group is not directly connected to the silicon atom, with a spacer group in the middle. This special molecular structure gives fluorosilicone oil excellent chemical stability. Even under extreme pressure conditions, fluorosilicone oil can maintain its chemical stability and is not easy to react chemically with other substances.

3. Lubricity
Fluorosilicone oil exhibits good lubricity under extreme pressure conditions. It can form a layer of -CF3 molecular assembly film with good hydrophobicity and oleophobicity on the surface of the friction pair. This film can greatly reduce the friction coefficient of the substrate and make it have good wear resistance under low load. At the same time, fluorosilicone oil can also be used as the base oil of grease. By adding thickeners, stabilizers and modified additives, it can be prepared into fluorosilicone grease or fluorosilicone paste for lubrication of high-speed and heavy-load bearings in contact with chemical reagents.

4. High temperature performance
Fluorosilicone oil has excellent high temperature resistance. Its main chain is the molecular polymerization main chain of polysiloxane Si-O repeating units. The bond energy of Si-O bond is much greater than the bond energy of C-C bond, which ensures the thermal stability of fluorosilicone oil. Therefore, fluorosilicone oil can maintain its original characteristics within a higher temperature change range and is suitable for applications in various high temperature environments.

5. Other properties
In addition to the above properties, fluorosilicone oil also has excellent weather resistance, water and oil resistance, flame retardancy and self-cleaning properties. These properties make fluorosilicone oil widely used in friction fields such as aerospace, automobiles, electromechanical and electronic machinery.

In summary, fluorosilicone oil exhibits excellent oil and solvent resistance, chemical stability, lubricity, high temperature performance and many other properties under extreme pressure conditions. These properties make fluorosilicone oil a high-performance lubricant, defoamer, surface treatment agent, release agent and additive, and are widely used in many fields.